When Palmer is messing up the computers in Kasie's lab, there is no reason for the lights inside the laminar airflow workstation in the background to be independently flashing on and off. This seems to be happening only to visually enhance the sense of chaos Jimmy is causing.
Knight doesn't relish singing the silly song that Laredo uses to entice the missing cat back. She doesn't have to: she only needs to play the recording that Laredo sent her.
When the DCIS agents explain they used Kasie to assist them, one of them adds "Not to mention her superb skills collecting forensic evidence." Kasie doesn't collect *any* evidence: she works in a lab, analysing the evidence that other agents bring in.
When Palmer is discussing Otis's death, the chest x-ray on the screen of his workstation is flipped.